Recent forecast ensembles from the China Meteorological Administration indicate Chengdu’s May 16 maximum will reach precisely 27 °C, driven by a stable high-pressure ridge promoting clear skies, subsidence, and moderate solar heating after cooler days earlier in the week. This aligns closely with May climatology at Shuangliu station, where average highs fall in the 26–28 °C range, and light northeasterly winds near 9 km/h combined with precipitation chances below 15 % minimize convective cooling. The market’s overwhelming 99.7 % implied probability on 27 °C reflects this tight model consensus. Any late-day increase in cloud cover or a shift in steering flow could cap the peak at 26 °C or allow a brief spike to 28 °C, though current conditions make such deviations unlikely before official hourly observations finalize the outcome this evening.